Weaver s shuttle



UNITED STATES PATENT FFICE.

LUCIUS J. KNOVVLES, .OF WARREN, MASSACHUSETTS.

WEAVER S SHUTTLE.

Specification of Letters Patent No. 16,734, dated March 3, 1857.

T 0 all 'whom it may concern:

Be it known that I, LUcrUs J. KNowLns, of Vai-ren, in the county oflVorcester and State of Massachusetts, have invented a new and usefulImprovement in Mechanism for IVeaving; and I do hereby declare that thesame is fully described and represented in the following specificationand the accompanying drawings, of which- Figure 1, is a side elevationof a shuttle containing my invention. Fig. 2, is a horizontal section ofit.

My improvement or invention consists in a means of causing a loom tostop its motion or weaving operation, on the breakage of the threadleading from the bobbin of the shuttle.

In the drawings, A, denotes a loom shuttle and B, a bobbin arrangedthereon in the usual way.

C, is the cam or projection usually applied to the shuttle and foroperating the protector or contrivance, which is usually connected witheitherY shuttle box of the loom lay and for the purpose of stopping themotion of the loom, in case the shuttle, during a throw of it, shouldnot properly enter the shuttle box to which it may be destined. In thiscase, the said cam, C, is aliixed to a spring D, and the shuttle isprovided with a recess, E, for reception of the spring and to allow suchspring and the cam to be sprung backward into t-he shuttle.

A tilting lever, F, is arranged on or within the side of the shuttle,and so as to turn freely up and down on a fulcrum a, one arm of thelever being so arranged that when it is horizontal it may be behind thecam, C, and serve as a stop to prevent the said cam from being movedbackward into the recess, E. In front and back of the other arm of thelever F a set of wires, guides, or lifters, Gr, G, arranged with respectto each other and the lever as shown in the drawings the thread, b, fromthe bobbin being led between the decussation or vertex of the angle ofthe wires, and the under side of the lever arm so that when the threadis pulled on, it will bear against one of the wires or guides and liftthe lever arm so as to bring the lever into a horizontal position. Thatarm of the lever, which operates in direct connection with the set ofwires should be a little heavier than the other arm in order that shouldthe thread break, and the lever become relieved from the force oftraction exerted on the thread such lever may tilt so as to bring saidother arm up so much above the cam, C, as to allow such cam to movebackward into its recess when force is applied to it for such purpose.

From the above it will be seen that while the shuttle is in motion overthe race beam, and its thread is unbroken the draft on such thread willmaintain the tilting lever in a horizontal position so as to keep thecam, C, forward and cause it to operate the protector. But should thethread become broken, the lever will be relieved from the pressure ofthe thread and will tilt so as to offer no obstacle to the movement ofthe cam, C, into the recess, E, into which it will be pushed by theprotector when driven against the same. Thus the cam will not operatethe protector or move it and therefore the loom will stop.

I am aware that a st-op motion or mechanism has been applied to ashuttle and race beam of t-he lay of a loom, and so as to operate insuch manner in case of the breakage of the filling thread of t-he bobbinof the shuttle as to stop the motion of the shuttle or arrest it in therace beam before it could enter the shuttle boxnext to that part of thesaid stop motion which was aflixed to the race beam. In this kind ofstop motion, the shuttle in being arrested in its motion across the racebeam is liable to be driven by the reed close into the crossing of thewarps. In case such should take place injury to the warps or loom mayensue. My stop motion is of an entirely different kind, as it allows theshuttle to enter each shuttle box, and when once in either box, the loomwill be stopped in case the filling thread may have been broken duringthe passage of the shuttle'across the race beam, and into such box.

What therefore I claim is- The combination of the tilting lever, F, theinclined wires, Gr, G, (or the equivalent of the latter) and a springcam, C, or means essentially the same as said spring cam, whereby incase of breakage of the thread from the Shuttle While the latter is inmotion 1ny Signature this 20th day of December across the race beam ofthe lay the Cam or eontrvanee to operate the protector may be Caused toso act with or againstsnch proteetor or its equivalent, that it shall bemade to produce stoppage of the loom as stated.

In testimony Whereo have hereunto set Vtnesses:

R. H. EDDY, F. P. HALE, Jr.

L. J. KNOWLES.

